Compensated suspension device for vehicles



Sept. 26, 1933. G, RONDIER 1,928,545

COMPENSATED SUSPENSION DEVICE FOR VEHICLES Filed Aug. 13 1932 i y)? ZZ/VenZar'" epryes 2071/1 12? atent pt.

comaxsaran svsrsssroiv non vsnroms Geo. Bondier, Paris, France Application August s, 1932, and in France August 2Claims. (cl. sat-104) The invention has for its object a compensated suspension device for vehicles and chiefly for motor-vehicles.

In this device, the ends of axles are pivoted to g levers oscillating about horizontal axes, and the diagonally opposed levers are connected by rods or similar members with the ends of a swingbar pivoted on the frame of the vehicle. Be-

tween the two swing-bars, suitable springs are placed, so as to transmit the motion of a swingbar to the other. Thusany disturbance exerted ins. point of the vehicle is-distributed on the whole of the frame and its eflecton passengers is consider 1s ably reduced.

In the annexed drawing,

, Fig. 1 is a plan-view showing schematically a device in conformitywith the invention.

Fig.2 is a corresponding elevation-view.

In this drawing s, S1, S2, s; are the four wheels of the vehicle, C is the frame, F and F1 are the front axle and rear-axle lines. At their ends the axles are pivoted at I and I1, on cranked levers E, E1, E2, E3. These levers are able to' oscillate about horizontal shafts Aon plates V on the frame C. diagonally opposed levers are connected "the ends of a swing-bar. "Thus, the left rear lever E1 and the right front I lever- Er are connected by rods t1 and t: respectively with the ends of a swing-bar P pivoted at D on a cross-beam D secured on the frame C. In the same manner the right rear lever E and the left front lever Ez are connected by rods t and t: t5 respectively with a swing-bar P1 pivoted on a rear=wheel B1 undergoes an upward shock in the direction of Z while rolling on a stone for instance.-

The upper arm of lever E1 is shifted in theright direction, pulling the rod t1 which turns the waiving-bar Pcounter-clockwise. In this motion the spring R pushes at h the'spring R1 and consequently the -bar Pi rotates in the e The rods t and in are then pulled tods the left and to v c. the rightrespectively.

The traction exerted on red t is transmit to the lever E and it produces an upward movement of.the front part of the frame.

It is thus understood that a shock exerted on the left rear wheel is distributed on the whole frame. The same efiect would be obtained in" case of a shock exerted on any other wheel and consequently the disturbance is as small as possible for the passengers.

Second example-4t is assumed that the .ve-- hicle turns to the left at a high speed.

In this case under the centrifugal force the vehicle tends to sink on the right side. Consequently the axes of levers E and Ea are lowered and the rods 1: and ts are pulled towards the left and towards the right respectively. j

The swing-bar P1 is shifted counter-clockwise while the swing-bar P is shifted clockwise, the springs R, R1 being tightened between both swingbars. 1 Owing to these angular movements of the swing-bars, the rods t and h are released and consequently theleft side of the frame .is low-' ered.

Tlihs whenever the left or'right side of the veso hicle'tends t'o'sink "the opposed side is lowered and perfect travelling stability is obtained.

Third example. It is assumed that the vehicle is overloaded at the rear side.

The axes of levers E and E1 are lowered and therefore the rods t and ti are pulled toward the right. The right arms of swing-bars P P1 are brought nearer and the rods t and vt: are released. Consequently the front part of the frame is lowered. Thus any excessive inclination of the frame to the rear is prevented.

Asimilar compensation would be obtained if the front part of the vehicle was overloaded.

The hereinbefore disclosed examples of operation prove that the suspension device in conformity with the invention ensures a very good stability and reduces as much as possible the reactions transmitted to the frame by any disturbing effort.

It is well understood that the invention is-not limited to the form of execution described and represented, and that any changes might be adopted for the shape and location of levers, swing-bars and connecting members.

I claim:

1. A compensated suspension device for vehicles, comprising in combination a chassis, four levers pivotally mounted on the chassis, a wheel carried by each lever, two swing-bars pivoted about vertical axes mounted on the chassis and 1 horizontally spaced by springs, and rods connecting the ends of each swing-bar to the ends of a pair of levers carrying diagonally situated wheels.

2. A compensated suspension device for vehicles, comprising in combination with a chassis, four bell-crank levers pivotally mounted adjacent the ends of the chassis, said bell-crank levers being positioned so that normally one arm is substantially horizontal and the other arm is substantially vertical, a wheel carried by the horizontal arm of each bell-crank, a pair of swingbars pivoted on spaced vertical axes carried on the central portion of he chassis, a rod con- 

